package com.hmall.gateway.filters;

import lombok.Data;
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.OrderedGatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.List;

@Component
public class PrintAnyGatewayFilterFactory extends AbstractGatewayFilterFactory<PrintAnyGatewayFilterFactory.Config> {



    @Override
    public GatewayFilter apply(Config config) {
//        return new GatewayFilter() {
//            @Override
//            public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
//                System.out.println("print any filter running") ;
//                return chain.filter(exchange);
//            }
//        };
        String a = config.getA();
        String b = config.getB();
        String c = config.getC();
        System.out.println("a=" + a + ", b=" + b + ", c=" + c);
        return new OrderedGatewayFilter(new GatewayFilter() {
            @Override
            public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
                System.out.println("print gateway filter");
                return chain.filter(exchange);
            }
        },1);
    }

    @Data
    public static class Config{
        private String a;
        private String b;
        private String c;
    }

    public PrintAnyGatewayFilterFactory() {
        super(Config.class);
    }

    @Override
    public List<String> shortcutFieldOrder() {
        return List.of("a", "b", "c");//决定属性顺序
    }




}
